| AIR FILTERS | EXYTE HARGREAVES LTD |
| GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| TROX UK LTD |
| ZEHNDER LTD |
| AIR FILTERS Air Purifying Units | TROX UK LTD |
| AIR FILTERS ASHRAE Standard 52-76 | TROX UK LTD |
| AIR FILTERS ATEX Certified | ZEHNDER LTD |
| AIR FILTERS Bakery / Bakeries | ZEHNDER LTD |
| AIR FILTERS Ceiling Mounted | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| ZEHNDER LTD |
| AIR FILTERS Cleanroom | FLÄKTGROUP UK LTD |
| TROX UK LTD |
| ZEHNDER LTD |
| AIR FILTERS Cleanroom EN 1822 | TROX UK LTD |
| AIR FILTERS Cleanroom EN 1822 Class H14 | TROX UK LTD |
| AIR FILTERS Cleanroom EN 1822 Class U15 | TROX UK LTD |
| AIR FILTERS Cleanroom EN 1822 Class U16 | TROX UK LTD |
| AIR FILTERS Cleanroom Eurovent Certified | TROX UK LTD |
| AIR FILTERS Commercial Applications | ZEHNDER LTD |
| AIR FILTERS Ducted | TROX UK LTD |
| ZEHNDER LTD |
| AIR FILTERS Electrostatic | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| ZEHNDER LTD |
| AIR FILTERS Electrostatic Ceiling Mounted | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| ZEHNDER LTD |
| AIR FILTERS Electrostatic Portable | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| ZEHNDER LTD |
| AIR FILTERS Electrostatic Wall Mounted | ZEHNDER LTD |
| AIR FILTERS EN 779 | TROX UK LTD |
| AIR FILTERS EN 1822 | TROX UK LTD |
| AIR FILTERS Food Production Areas | ZEHNDER LTD |
| AIR FILTERS Heat Exchange Ventilator Combined | DOMUS VENTILATION |
| ZEHNDER LTD |
| AIR FILTERS Industrial Applications | ZEHNDER LTD |
| AIR FILTERS Polarising Systems | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| AIR FILTERS Recycling Centres | ZEHNDER LTD |
| AIR FILTERS Storage Areas | ZEHNDER LTD |
| AIR FILTERS Wall Mounted | GDHV VENTILATION - GLEN DIMPLEX HEATING & VENTILAT |
| ZEHNDER LTD |
